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O. O. Ajayi

Publications (14)

Safety Evaluation of Ripe Banana Peel (Musa acuminata) Waste as a Potential Aquaculture Feed Additive through Acute Toxicity and Histopathological Studies in Juvenile Clarias gariepinus

U. U. George, O. O. Ajayi, C. C. Okorie, A. C. Agbara & I. E. George · Asian Journal of Environment & Ecology · 2026

The safe use of agricultural wastes in aquaculture feeds requires prior toxicological assessment. This study evaluated the acute toxicity and histopathological effects of an ethanolic extract of ripe banana peel (Musa acuminata) in juvenile African catfish (Clarias gariepinus). F...

Open access Research Article 10.9734/ajee/2026/v25i8994

Establishing a Dose-response Toxicity for Clarias gariepinus Fingerlings Exposed to Ethanolic Extract of Lantana camara

U. U. George, O. O. Ajayi, I. E. George & U. E. Vincent · Asian Journal of Fisheries and Aquatic Research · 2023

The toxicity of lantana camara on the survival and histopathology of gills of Clarias gariepinus fish from Fisheries unit, Akwa Ibom State University Obio Akpa, farm was studied in two batches (A, and B) using the ethanolic extract (EE) of Lantana camara for 96 hours under labora...

Open access Research Article 10.9734/ajfar/2023/v24i1622

Evaluation of Coconut Fibre Reinforced Low Density Polyethelene Composites

S. A. Bam, O. O. Ajayi & K. K. Ikpambese · Journal of Engineering Research and Reports · 2023

Physical, mechanical and dynamic properties of composites produced from coconut fibres using pure water sachet (LDPE) as matrix were evaluated in this study in order to assess its suitability for use as particleboards. The LDPE (waste water sachets) and coconut coir/fibre were co...

Open access Research Article 10.9734/jerr/2023/v24i12859

Chemical Fractionation of Heavy Metals in the Soil of Auto-Mechanic Workshops in Akure, Ondo State, Nigeria

Ajisafe Monday Peter, O. O. Ajayi, E. O. Abata, Akinnawo Solomon & M. T. Oluwalope · Chemical Science International Journal · 2018

Total metal concentrations and sequential extraction scheme were employed to investigate the potential environmental risk of seven important metals in the soil of selected auto-mechanic workshops in Akure metropolis, Ondo State, Nigeria. Soil physicochemical parameters were also...

Open access Research Article 10.9734/CSJI/2017/38088

Comparative Study of the Physicochemical Properties of Oils of Sheanut (Vitellaria paradoxa) and Cocoa (Theobroma cacao)

Anietie Olayemi Victoria & O. O. Ajayi · Current Journal of Applied Science and Technology · 2015

This research work involves a study of the physico-chemical properties, fatty acid composition of oils of sheanut (Vitellaria paradoxa), cocoa (Theobroma cacao) and the effect of roasting on these properties. The data obtained were subjected to one-way analysis of variance (ANOVA...

Open access Research Article 10.9734/BJAST/2015/15787

Comparative Analysis of the Nutritional Qualities of Seeds of Shea Nut (Butyrospermum parkii) and Cocoa (Theobroma cacao)

Anietie Olayemi Victoria & O. O. Ajayi · Current Journal of Applied Science and Technology · 2014

This research work compares the chemical, nutritional and anti-nutritional compositions of shea nut (Vitellaria paradoxa) with cocoa (Theobroma cacao), and the effect of roasting on these properties. The ash, crude fibre, fat and carbohydrate contents of the two seeds showed some...

Open access Research Article 10.9734/BJAST/2015/8555

Dose-Response Relationship and Histo-morphological Alterations on Oreochromis niloticus Juveniles Following Exposure to Ethanolic Extract of Latana camara

U. U. George, A. J. Otoh, O. O. Ajayi & I. E. George · Asian Journal of Research in Zoology · 2023

Aim: This research intends to evaluate the toxicity of latana camara and ascertain if it can be useful as a plant-based additive in the formulation of fish feed. Study Design: The study was conducted using two replicate (Batch A and B) for 96 hours under controlled laboratory con...

Open access Research Article 10.9734/ajriz/2023/v6i4124

Studies on Mortality and Histopathological Alteration on the Gills of Oreochromis niloticus Juveniles Following Exposure to Ethanolic Extract of Phramenthera capitata under Laboratory Conditions

U. U. George, A. J. Otoh, O. O. Ajayi & I. E. George · Asian Journal of Fisheries and Aquatic Research · 2023

The study was conducted using two replicate (Batch A and B) for 96 hours under controlled laboratory conditions, with five different concentrations of the extract ranging from 0 to 40 mg/l. The results of the study revealed that the extract had a concentration-dependent toxic eff...

Open access Research Article 10.9734/ajfar/2023/v24i3634

Effect of Bleaching on the Physico-chemical Properties of Two Selected Vegetable Oils Using Locally Sourced Materials as Adsorbent

Jeje, O. Ayorinde, A. E. Okoronkwo & O. O. Ajayi · Current Journal of Applied Science and Technology · 2019

The quality and stability of palm kernel oil (PKO) and cottonseed oil (CTSO) as affected by bleaching using modified oyster shell powder (OSP) and periwinkle shell powder (PSP) were evaluated by analysing their physicochemical properties. The two adsorbents potential was improved...

Open access Research Article 10.9734/cjast/2019/v36i430244

Archachatina marginata Haemolymph Potentiates Hypoglycemic Effect by Mimicking Insulin in Streptozotocin-Induced Diabetic Rat

S. K. Adeboye, A. T. Ogundajo, O. O. Ajayi & O. M. Oluba · Journal of Pharmaceutical Research International · 2017

Aims: This study investigates the hypoglycemic potential of Archachatina marginata haemolymph and its mechanism in streptozotocin -induced diabetic rats. Study Design: One factor experimental design. Place and Duration of Study: Department of Chemical Sciences, Joseph Ayo Babalol...

Open access Research Article 10.9734/JPRI/2017/33786

Effect of Batch Removal of Copper from Aqueous Solutions Using Tannin-immobilized Hide Collagen

M. O. Oseni, A. O. Adebayo, O. O. Ajayi & L. Lajide · International Research Journal of Pure and Applied Chemistry · 2016

This study is aimed at preparing collagen fiber from cow hide and to utilize it as cheap, effective and alternative adsorbent against the more expensive and relatively less effective techniques for the removal of Cu(II) ion from aqueous solution and to find a suitable pH, equilib...

Open access Research Article 10.9734/IRJPAC/2016/23392

Outdoor Air Quality and Acid Rains within Warri Refinery and Its Environs

U. E. Amuho, I. A. Amoo, O. O. Ajayi, A. F. Aiyesanmi & T. A. Akinnifesi · Current Journal of Applied Science and Technology · 2016

The focus of the research was to assess the impact of the Warri Refinery operations on the outdoor air quality within the refinery and its environs. The Warri Refining and Petrochemical Company (WRPC) is an industrial complex of the Nigeria National Petroleum Corporation (NNPC) d...

Open access Research Article 10.9734/BJAST/2016/23688

The Role of EDTA on Heavy Metals Phytoextraction by Jatropha gossypifolia Grown on Soil Collected from Dumpsites in Ekiti State Nigeria

E. E. Awokunmi, S. S. Asaolu, O. O. Ajayi & O. A. Adebayo · International Journal of Environment and Climate Change · 2012

Jatropha gossypifolia has been known to thrive well in tropical climate, most importantly in Nigeria where they are found to grow naturally on dumpsites. The potential use of this robust tropical plant in phytoremediation technology should be advocated especially for developing c...

Open access Research Article 10.9734/BJECC/2012/1291

Effect of Deposition Temperature on the Tribology of MOCVD Zinc Oxide Thin Films Tested under Dry Contact

U. S. Mbamara, B. Olofinjana, C. Lorenzo-Martin, O. O. Ajayi, E. I. Obiajunwa & E. O. B. Ajayi · Journal of Materials Science Research and Reviews · 2019

Zinc oxide has justifiably been attracting attention in several fields, and the relatively new field of tribology is not left out. Aside from its already extensively researched and documented applications in materials science, semiconductor and electronics industry, zinc oxide na...

Open access Research Article 10.9734/jmsrr/2019/v2i254